package com.kk.blog.dao;

import com.kk.blog.pojo.Blog;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Repository
public interface BlogRepository extends JpaRepository<Blog,Long> , JpaSpecificationExecutor<Blog> {

    @Query( "select b from Blog b where b.recommend = true")
    List<Blog> findTop(Pageable pageable);

    //@Query("select b from Blog b where b.title like ?1 or b.content like ?1 or b.description like ?1") //+描述文本
    // select * from t_blog where title like'%内容%'
    @Query("select b from Blog b where b.title like ?1 or b.content like ?1") //查标题和内容
    Page<Blog> findByQuery(String query, Pageable pageable);

    @Transactional
    @Modifying
    @Query ( "update Blog b set b.views = b.views+1 where b.id = ?1")
    int updateViews(Long id);

    //归档按年份查询的所有博客
    @Query("select function('date_format',b.updateTime,'%Y') as year from Blog b group by function('date_format',b.updateTime,'%Y') order by function('date_format',b.updateTime,'%Y') asc ")
    List<String> findGroupYear();
    @Query("select b from Blog b where function('date_format',b.updateTime,'%Y') = ?1")
    List<Blog> findByYear(String year);




}
